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Marwan 2
Arabic:
marwān bni muhammadi bni marwān
(688-750) Caliph of SunniIslam 744-750, as the last ruler of the Umayyad Dynasty.Despite being the last ruler of the Umayyad Dynasty, ending his life being killed while trying to flee, Marwan was far from incompetent as a ruler. During his years as a military commander, he introduced many reforms that made the military more efficient. He replaced the system of divisions based on tribes with a system of small and paid units under professional command.The Umayyad Empire had started falling apart long before Marwan became caliph.

Biography688: Born, as grandson of former Caliph Marwan 1.
 Serves as a military commander, reforming the organization of the army.744: Caliph Ibrahim abdicates, and Marwan becomes new caliph.746: Reconquer the remaining parts of Syria.747: The Abbasid revolts starts, where the Umayyad forces face the Abbasids aided by Persians, Iraqis and Shi'is.750: Final battle at the Great Zab River. The Umayyad troops are decisively defeated. almost 300 of the Umayyad family are killed. Abd ar-Rahman survives, and would reestablish the dynasty in Spain.
 Marwan flees, but is captured while trying to cross the Nile of Egypt and is killed.